Open Collections

Performance degradation of a transmit diversity scheme due to correlated fading

University of British Columbia

The error performance of the Alamouti simple transmit diversity (STD) scheme in the presence of time-selectivity and channel estimation errors has been previously studied. In this thesis, results are obtained for two other scenarios: (1) non time-selective, spatially correlated Rayleigh fading with imperfect channel estimation and (2) time-selective, spatially correlated Rayleigh fading with perfect channel estimation. Exact expressions for the conditional bit error rates given the estimated channel gains are derived and approximations for average bit error rates over correlated Rayleigh fading are obtained using matrix transformations. It is found that STD performance generally degrades with increase in channel estimation errors, decrease in temporal correlation and increase in spatial correlation. The degradation is greatest with channel estimation errors, then time-selectivity and thirdly with spatial correlation.

Text

2009-12-11

For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.

http://hdl.handle.net/2429/16470

Electrical and Computer Engineering

University of British Columbia

UBCV

DSpace